NH Notes: Mars Takes Another Hit, Wishes it had an Atmosphere Like Earth

There is much interest in determining the likelihood of future asteroid and meteorite impacts on Earth.  It is very difficult to estimate the probabilities of such events but we can learn something by looking to one of our solar system neighbors – Mars.  Because the surface of Mars changes so slowly new impacts there can […]

My Interview with a Martian: A Story of Origins

Everything has an origin.*  Some stories of origins are very simple (eg. the current island of Krakatoa from a volcanic blast recorded in history)  while others are much more complex (eg. the Grand Canyon).  The study of origins is the study and reconstruction of past events.  We have eyewitness accounts of some events from the […]

The YDB Event: The Most Recent Global Catastrophe in Human History?

Remember the meteor that exploded over Russia earlier this year? A 50 foot diameter object exploded 14 miles above the surface of the earth and created a shock wave that injured 1500 people and damaged more than 7000 buildings. Despite the drama, the lasting effects on the earth were minimal and only small pieces of the meteorite made it to the surface of the earth.

Finding Mars on Earth: A Conversation about Martian Meteorites

Maybe you missed it last week with all the excitement of  the pictures from Curiosity and its analysis of the rocks on Mars (See my last post: Curious Geology: Stunning Images Reveal a Complex Mars) but there was another pronouncement of further evidence that watery processes were once active on Mars.  Where did this evidence […]